Light-controlled hierarchical self-assembly of polyelectrolytes and supramolecular polymers

John B. Matson, Yotam Navon, Ronit Bitton, Samuel I Stupp

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Dynamic control over supramolecular interactions using various stimuli continues to drive the development of smart materials. We describe here the extension of dynamic self-assembly to a self-assembled hierarchical structure. A peptide amphiphile (PA) was designed with a photocleavable nitrobenzyl ester component such that it would undergo a sphere-to-cylinder transition upon irradiation, as confirmed by cryogenic transmission electron microscopy and small-angle X-ray scattering (SAXS). The photocleavable PA was then tested in the formation of a macroscopic sac made through a complex hierarchical self-assembly process between PA and hyaluronic acid. The microstructure of the resulting sac has previously been noted to depend dramatically on the geometry of the PA nanostructure. Photolysis of the PA solution during sac formation led to a sac microstructure that displayed characteristics of sacs made with both cylinder-forming PAs and sphere-forming PAs, as measured by scanning electron microscopy and SAXS. (Figure Presented)

Original languageEnglish
Pages (from-to)43-47
Number of pages5
JournalACS Macro Letters
Volume4
Issue number1
DOIs
Publication statusPublished - 2015

Fingerprint

Amphiphiles
Polyelectrolytes
Self assembly
Peptides
Polymers
X ray scattering
Hyaluronic acid
Microstructure
Intelligent materials
Photolysis
Hyaluronic Acid
Cryogenics
Nanostructures
Esters
Irradiation
Transmission electron microscopy
Scanning electron microscopy
Geometry

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Light-controlled hierarchical self-assembly of polyelectrolytes and supramolecular polymers. / Matson, John B.; Navon, Yotam; Bitton, Ronit; Stupp, Samuel I.

In: ACS Macro Letters, Vol. 4, No. 1, 2015, p. 43-47.

Research output: Contribution to journalArticle

Matson, John B. ; Navon, Yotam ; Bitton, Ronit ; Stupp, Samuel I. / Light-controlled hierarchical self-assembly of polyelectrolytes and supramolecular polymers. In: ACS Macro Letters. 2015 ; Vol. 4, No. 1. pp. 43-47.
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